Raypak 5000.72A, Installation & Operating Instructions Manual

Page: 4 / 80

4
Introduction
The Raypak VERSA
®
IC is an appliance integrated
control system consisting of the following components:
• VERSA
®
Control Board
• VERSA
®
Display Board
• VERSA
®
Platform Ignition Module (PIM)™ in HSI,
DSI or Supervised Pilot Ignition
• ID Card
• Water Sensors (up to 5)
• Vent Sensor
• Outdoor Air Sensor
The VERSA IC
®
control system provides integrated
functions of automatic ignition control, thermostat con-
trol, high temperature limit control, diagnostic
enumeration, safety interlock, domestic hot water
(DHW) override, Cold Water Protection (CWP) and
several options for external heater control for Raypak
commercial boilers, water heaters and pool heaters.
The VERSA IC
®
control system controls the heater
pump, system pump and indirect DHW pump simulta-
neously as needed.
VERSA
®
Control Board
The VERSA
®
Control Board provides high-level func-
tionality for the VERSA IC
®
control system. It has field
interlock connections, cascading heater connections
and VERSA
®
Display Board connections. The VERSA
IC
®
control system allows “limp-along” operation via
the PIM™ if the VERSA
®
Control Board becomes
inactive or if the communications between the
VERSA
®
Control Board and the PIM™ are terminated
for any reason. This “limp-along” mode operation is
outlined in more detail starting on page 62. The
VERSA
®
Control Board is ANSI Z21.23 certified as a
controller.
In addition, the VERSA IC
®
control system allows cas-
cading control of multiple units up to 4 units total
without the need for an external sequencer. The
VERSA IC
®
control system is Modbus ready for easy
external communication and control.
Fig. 1: Water Sensors
Fig. 2: Outdoor Air Sensor (S4)
Raypak
VERSA
#013935F
Designed and assembled in Canada
158033
ON
1 2 3 4 5 6 7 8
Condensate Switch
Vent Temp Limit
Auto High Limit
Low Water
Blocked Vent
Low Gas Press
High Gas Press
(Extra)
CN5
Water Flow Switch
Blower Air Switch
Factory Option 3
Factory Option 2
Factory Option 1
CN8
LED Out
Diagnostics
Power On
Call For Heat
Burner On
Service
CN6
1049-01
PIM 2
Ft_Bus
A
B
PIM 3
Ft_Bus
A
B
PIM 4
Ft_Bus
A
B
GND
CN2
F6018C
Fan /
Damper
CN4
R
Com
S6
RS485-A
RS485-B
Mod +
GND
GND
GND
ModBus-A
ModBus-B
CN1
CWS/CWR
Remote LCD
CN7
S7
Extra
External
Valve
Power: 24 V (ac) ± 10% 50/60 Hz 5.2 VA 215 mA
Relays: 240 V (ac) 5 A
CN3
Fig. 3: VERSA ® Control Board
INLET (S2) OUTLET (S1)
FIELD
INSTALLED
(S5, S6, S3)